CN102699273B - Precision casting method for large-scale aluminium alloy impeller - Google Patents
Precision casting method for large-scale aluminium alloy impeller Download PDFInfo
- Publication number
- CN102699273B CN102699273B CN 201210147837 CN201210147837A CN102699273B CN 102699273 B CN102699273 B CN 102699273B CN 201210147837 CN201210147837 CN 201210147837 CN 201210147837 A CN201210147837 A CN 201210147837A CN 102699273 B CN102699273 B CN 102699273B
- Authority
- CN
- China
- Prior art keywords
- alloy impeller
- aluminum alloy
- resin
- silicon rubber
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a precision casting method for a large-scale aluminium alloy impeller, which is characterized by comprising the following steps of: 1, placing the aluminium alloy impeller into a container, pouring resin into the container and then etching off the aluminium alloy impeller to form a resin one-piece pattern; 2, filling silicon rubber into the resin one-piece pattern and taking out the resin one-piece pattern after the silicon rubber is cured so as to obtain a silicon rubber pattern; 3, placing the silicon rubber pattern into foaming gypsum slurry and extracting the silicon rubber pattern after the foaming gypsum slurry is cured so as to form a gypsum die; and 4, by utilizing a counter-pressure casting method, filling molten aluminium into the gypsum die and after the molten aluminium is cooled, cracking the gypsum die to obtain an aluminium alloy impeller casting. The method is suitable for various parts which are of complex shapes and inconvenient to open the die.
Description
Technical field
The present invention relates to a kind of casting method, especially relate to a kind of casting method of large aluminum alloy impeller.
Background technology
As shown in Figure 1, a kind of aluminum alloy impeller, every blade is all to have curly form, this just makes the mold releasability difficulty, traditional product for this shape, can only take the form of assembling die, at each blade place, make a mould, then combine the mould that forms whole aluminum alloy impeller, this mode, because the quantity of blade is more, it is chronic that assembling die needs, and be difficult to guarantee the combination precision of mould afterwards.Another method is mach mode, due to the impeller shape scrambling, need to adopt five axle Cutter Body Processing with Machining Center moulding, complex-shaped due to impeller, and the time that processing needs is longer, and cost is very high.
Summary of the invention
The present invention is directed to deficiency of the prior art, a kind of casting method of large aluminum alloy impeller is provided, can guarantee the precision of foundry goods, raise the efficiency and greatly reduce costs.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of casting method of large aluminum alloy impeller, it is characterized in that comprising the steps: (1) machined aluminum alloy impeller, again aluminum alloy impeller is put into to a container, toward the interior perfusion resin of container, until after resin is cooling, then aluminum alloy impeller is eroded, forms the whole mould of a resin; Because the shape of impeller is not suitable for extracting out, so aluminum alloy impeller can only be eroded, the shape of the inner cavity formed of resin mold is identical with the shape of aluminum alloy impeller.
(2) toward the interior filled silicon rubber of the whole mould of resin, after silicon rubber solidifies by the time, take out, obtain the silicone rubber model identical shaped with aluminum alloy impeller; The silicon rubber material is softer, and its blade-section, when extracting out, elastic deformation can occur, thus can from the whole mould of resin, extract out, and can not damage the whole mould of resin or silicone rubber model itself.
(3) silicone rubber model is put into to the foaming plaster slurry, it is identical with the density of silicon rubber that the density of foaming plaster slurry keeps, until, after foaming plaster solidifies, by the silicone rubber model extraction, just formed a gypsum mold; The density of gypsum slurry is identical with the density of silicone rubber model, makes silicone rubber model can be suspended in gypsum slurry, is not easy to occur deformation.
(4) utilize the method for counter-pressure casting, aluminium liquid is filled with in gypsum mold, until, after aluminium liquid cooling but, gypsum mold is broken into pieces, obtain aluminum alloy impeller.
In technique scheme, preferred, the frothing percentage of the described foaming plaster of step 3 is 40%-50%.The effect of selecting foaming plaster is to make the gas permeability of mould greatly improve, in last technical scheme, concrete, the composition of described foaming plaster slurry comprises 1 to 3 part of white cement, land plaster 90-110 part, 2 to 4 parts of bauxites, 1 to 2 part of clay, 0.1 to 0.2 part of 80 to 100 parts of moisture and blowing agent.
In technique scheme, preferred, be 20 ~ 25min the hardening time of silicon rubber mould described in step 2.
The invention has the beneficial effects as follows: 1, utilize silicone rubber model to be placed in gypsum slurry, after gypsum solidifies, extract silicone rubber model out and just can easily make the gypsum mold of manufacturing impeller, the manufacture of gypsum mold is more convenient, do not need to expend the too many time, therefore greatly saved cost, and the silicone rubber model of extracting out can also Reusability.2, gypsum mold, without being combined, can not produce the precision problem formed because of combined error.3, adopt foaming plaster as the gypsum mold material, greatly improved the gas permeability of gypsum mold, guarantee that aluminium liquid, at gypsum mold die cavity the inside good fluidity, not there will be the phenomenon of some position filler deficiency; Also can greatly save the amount of gypsum raw material simultaneously, cost-saving; And foaming plaster is not easy to be bonded on cast(ing) surface, cleaning is convenient.
The accompanying drawing explanation
Fig. 1 is the product schematic diagram that the embodiment of the present invention finally obtains.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail.
Referring to Fig. 1, a kind of casting method of large aluminum alloy impeller, it is characterized in that comprising the steps: 1) a machined aluminum alloy impeller, again aluminum alloy impeller is put into to a container, toward the interior perfusion resin of described container, until after resin is cooling, more described aluminum alloy impeller is eroded, forms the whole mould of a resin; 2) toward the interior filled silicon rubber of the whole mould of described resin, after waiting until that described silicon rubber solidifies 20min, take out, obtain the silicone rubber model identical shaped with described aluminum alloy impeller; 3) described silicone rubber model is put into to the foaming plaster slurry, it is identical with the density of described silicon rubber that the density of described foaming plaster slurry keeps, until, after described foaming plaster solidifies, by described silicone rubber model extraction, just formed a gypsum mold; The frothing percentage of foaming plaster is 40%-50%, and its concrete composition is 2 parts of white cements, 100 parts of land plasters, 2 parts of bauxites, 1 part of clay, 0.2 part of 80 parts of moisture and blowing agent; 4) utilize the method for counter-pressure casting, aluminium liquid is filled with in described gypsum mold, until, after aluminium liquid cooling but, described gypsum mold is broken into pieces, obtain aluminum alloy impeller foundry goods as shown in Figure 1.
Claims (2)
1. the casting method of a large aluminum alloy impeller, it is characterized in that comprising the steps: a machined aluminum alloy impeller, again aluminum alloy impeller is put into to a container, toward the interior perfusion resin of described container, until after resin is cooling, again described aluminum alloy impeller is eroded, form the whole mould of a resin; Toward the interior filled silicon rubber of the whole mould of described resin, after waiting until that described silicon rubber solidifies, take out, obtain the silicone rubber model identical shaped with described aluminum alloy impeller; Described silicone rubber model is put into to the foaming plaster slurry, and it is identical with the density of described silicon rubber that the density of described foaming plaster slurry keeps, until, after described foaming plaster solidifies, by described silicone rubber model extraction, just formed a gypsum mold; Utilize the method for counter-pressure casting, aluminium liquid is filled with in described gypsum mold, until after aluminium liquid cooling but, described gypsum mold is broken into pieces, is obtained the aluminum alloy impeller foundry goods, the frothing percentage of described foaming plaster is 40%-50%, the composition of described foaming plaster slurry comprises 1 to 3 part of white cement, land plaster 90-110 part, 2 to 4 parts of bauxites, 1 to 2 part of clay, 0.1 to 0.2 part of moisture 80-100 part and blowing agent.
2. the casting method of a kind of large aluminum alloy impeller according to claim 1, is characterized in that: 20～25min hardening time of described silicon rubber mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210147837 CN102699273B (en) | 2012-05-14 | 2012-05-14 | Precision casting method for large-scale aluminium alloy impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210147837 CN102699273B (en) | 2012-05-14 | 2012-05-14 | Precision casting method for large-scale aluminium alloy impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102699273A CN102699273A (en) | 2012-10-03 |
| CN102699273B true CN102699273B (en) | 2013-12-25 |
Family
ID=46892491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210147837 Active CN102699273B (en) | 2012-05-14 | 2012-05-14 | Precision casting method for large-scale aluminium alloy impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102699273B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861991A (en) * | 2012-12-18 | 2014-06-18 | 侯伟 | Gypsum mold formula for impeller casting and mixing manufacturing technology |
| CN103769560A (en) * | 2014-02-12 | 2014-05-07 | 宁波霍思特精密机械有限公司 | Suction casting process of turbocharger impeller |
| CN105710315B (en) * | 2014-12-04 | 2017-09-19 | 北京有色金属研究总院 | Casting method of pressure impeller |
| CN106825386A (en) * | 2017-01-09 | 2017-06-13 | 无锡迪欧机械制造有限公司 | A kind of manufacturing process of twin columns disjunctor supercharging impeller |
| CN112743044A (en) * | 2020-12-29 | 2021-05-04 | 上海蓝铸特种合金材料有限公司 | Precision casting method of ultra-fine grain size high-temperature alloy impeller |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992266A (en) * | 2010-12-07 | 2011-03-30 | 山东理工大学 | Manufacturing method for investment casting wax model |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714545B2 (en) * | 1986-09-26 | 1995-02-22 | 蛇の目ミシン工業株式会社 | Casting method |
| JP4925289B2 (en) * | 2006-11-06 | 2012-04-25 | 日本碍子株式会社 | Method for producing a gypsum mold for casting |
-
2012
- 2012-05-14 CN CN 201210147837 patent/CN102699273B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992266A (en) * | 2010-12-07 | 2011-03-30 | 山东理工大学 | Manufacturing method for investment casting wax model |
Non-Patent Citations (2)
| Title |
|---|
| 刘国利，等.高强度铝合金叶轮的精密铸造.《航空材料学报》.1991,第11卷(第2期),44-48. * |
| 张勇,等.用快速精密铸造工艺铸造叶轮发泡模具.《铸造技术》.2012,第33卷(第2期),219-221. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102699273A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103920852B (en) | A kind of precision casting process of large foundry goods | |
| CN102699273B (en) | Precision casting method for large-scale aluminium alloy impeller | |
| CN102218505B (en) | Precise casting technology for green sand vacuum sealing model | |
| CN109175307A (en) | A kind of 3D printing sand mold antigravity casting forming method | |
| CN102198488A (en) | Method for manufacturing casting blank of refrigerator inner container die by using lost foam casting process | |
| CN105170911B (en) | A kind of complicated abnormal shape is combined the manufacture method of core | |
| CN204770594U (en) | Motor casing low pressure casting is with spiral water channel psammitolite of taking protective layer | |
| CN101992272A (en) | Self-adaptive casting mould manufacture method for casting | |
| CN104493085A (en) | Manufacturing method of compound sand casting die | |
| CN106111902B (en) | The medium-sized thin wall type copper figure of buddha manufacture method of concealed | |
| CN103231015A (en) | Device and method for quickly fabricating electrode | |
| CN104550715A (en) | Method for manufacturing integral casting metal mould | |
| CN202877483U (en) | Medium-small type and large-batch steel casting production and casting mould | |
| CN105215287B (en) | A kind of valve body evaporative pattern and its manufacture method | |
| CN204242806U (en) | A kind of casting mold of dry-type transformer coil | |
| CN103447457A (en) | Moulding method for slag pot structure | |
| CN102672113A (en) | Method for pouring copper alloy neck mould of glass mould by using single resin sand box | |
| CN102825214B (en) | Method for manufacturing mold casing of flanging pouring cup in investment casting process | |
| CN103639358A (en) | Lost foam casting method of anode steel claw and anode steel claw white die formed by lost foam casting method | |
| CN102000763A (en) | Vacuum sealed casting method for ductile iron hub of wind driven generator | |
| CN204381297U (en) | Sand-cast sand leakage avoiding insulated feeder particular manufacturing craft | |
| CN104550732A (en) | Water glass type copper mold casting process | |
| CN105268926A (en) | Method for casting steel anode template through composite sand mould | |
| CN106825405B (en) | A kind of vertical pouring structure for producing well lid in batches | |
| CN104550760A (en) | Soluble core repairing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180626 Address after: 315701 Xiangshan port industrial estate, Xian town, Xiangshan County, Ningbo, Zhejiang Patentee after: Ningbo star arrow Pml Precision Mechanism Ltd. Address before: No. 35, No. 268, Beihai, Beihai, Jiangbei District, Ningbo, Zhejiang Patentee before: NINGBO HOST PRECISION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230419 Address after: Xiyang village, Shiqi street, Haishu District, Ningbo City, Zhejiang Province Patentee after: NINGBO XINGJIAN SPACE MACHINERY Co.,Ltd. Address before: 315701 Xiangshan port industrial estate, Xian town, Xiangshan County, Ningbo, Zhejiang Patentee before: Ningbo star arrow Pml Precision Mechanism Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Xiyang village, Shiqi street, Haishu District, Ningbo City, Zhejiang Province Patentee after: Star Arrow Technology Co.,Ltd. Address before: Xiyang village, Shiqi street, Haishu District, Ningbo City, Zhejiang Province Patentee before: NINGBO XINGJIAN SPACE MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |